Power supply device



FIG. 1 is a top perspective view of a power supply device showing my new design.

FIG. 2 is a top plan elevation view therefore;

FIG. 3 is a bottom plan view therefore;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The broken lines shown in the drawings are included for the purpose of illustrating environmental structure and form no part of the claimed design.

My design is characterized by the features as shown in the drawings. 

The ornamental design for a power supply device, as shown and described. 